OpenAI announced GPT‑6.1 Sol at its DevDay on September 29, 2026. The model is priced exactly like the earlier GPT‑6 Sol – $2 for every million input tokens and $10 for every million output tokens. The company says the new version is a step up in reasoning and coding ability, but the price has not changed.
How the pricing compares
The move puts OpenAI’s mid‑tier model well below the cost of Anthropic’s Claude Opus 5.5, which charges around $4 per million input tokens. DeepSeek’s V4.1 Flash, a popular open‑weight model, costs $0.15 for input and $0.60 for output per million tokens. OpenAI’s GPT‑6 Luna, launched a week earlier, is even cheaper at $0.10 input and $0.50 output per million tokens.
Why the price cut matters
OpenAI’s aggressive pricing is aimed at winning more enterprise customers. At the same time, the company reported over 1.2 billion weekly ChatGPT users, 35 million weekly ChatGPT Work and Codex users, and 2.5 million businesses on its platform. Lower token costs could make it easier for developers and firms to experiment with larger, more capable models without blowing their budgets.
Why it matters
For everyday developers and businesses, the lower token prices mean they can run more queries, build richer apps, and keep AI costs from eating up profit margins. For users, it may translate into cheaper subscription tiers or more features in tools like ChatGPT Work.
